Electric Circuits Answers

Two identical charges of 100 microcoulombs each are 12 cm apart. What is the electric potential at a point midway between them? What is the intensity of the electric field at the midway between them?

A section of iron wire having a diameter of 0.030 inch is measured to have a resistance of

2500

Ω (at a temperature of 20°C).

a. Determine the cross

-sectional area in square meters and in square millimeters.

(Note: 1 inch = 2.54 cm = 25.4 mm)

b. Calculate the length of the wire in meters.

two charges Q1=+3nC and Q2=-5nC are separated by a distance of 6cm and 2cm for point A amd 2cm and 10cm for point B (a) Calculate the electric potential at point A and point B.

(b) How much work is done by the electric field in a moving 4.00nC particle from point A and point B.

How will you define a smart city? Is the characteristics of a smart city similar to smartphones? In what way(s)?

Is it possible to build a smart grid in the Philippines? What necessary actions are needed to fulfill this goal?

Two identical point charges, 10 cm apart in air, repel each other with a force of 1 newton. Find the magnitude of each charge.

What is the force between an electron and a proton if they are 1.0x10-8cm?

What is the force between two electrons 1.0 centimeter apart in air?

two point charges are located on the positive x axis of a coordinate system charge q1=1.0nC is 2.0cm from the origin, another charge q2=-3.0nC os 4.0cm from the origin .what is the total force exerted by these two charges on charge q3=5.0nC located at The origin

A current of 10 A flows through a conductor and 10w is dissapted,what p.d exist across the end of the conductor

4 

A voltmeter which is connected across a lightbulb in a circuit, reads 2V.  Consider the following: 

For every one coulomb of charge flowing through the bulb: 

1. 2J of heat and light is liberated 
2. The potential energy decreases with 2J 
3. The potential energy increases with 2J 

1. i and ii 
2. i and iii 
3. ii and iii 
4. i, ii, and iii